ab022a8987
SDL_SetVideoMode() now accepts 0 for width or height and will use the current video mode (or the desktop mode if no mode has been set.) --HG-- extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401549
609 lines
16 KiB
C
609 lines
16 KiB
C
/*
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SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2006 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
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slouken@libsdl.org
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*/
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#include "SDL_config.h"
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#include <sys/time.h>
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#include <sys/mman.h>
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#include <sys/ioctl.h>
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#include <dev/wscons/wsdisplay_usl_io.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <errno.h>
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#include "SDL_video.h"
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#include "SDL_mouse.h"
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#include "../SDL_sysvideo.h"
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#include "../SDL_pixels_c.h"
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#include "../../events/SDL_events_c.h"
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#include "SDL_wsconsvideo.h"
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#include "SDL_wsconsevents_c.h"
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#include "SDL_wsconsmouse_c.h"
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#define WSCONSVID_DRIVER_NAME "wscons"
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enum {
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WSCONS_ROTATE_NONE = 0,
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WSCONS_ROTATE_CCW = 90,
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WSCONS_ROTATE_UD = 180,
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WSCONS_ROTATE_CW = 270
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};
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#define min(a,b) ((a)<(b)?(a):(b))
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/* Initialization/Query functions */
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static int WSCONS_VideoInit(_THIS, SDL_PixelFormat *vformat);
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static SDL_Rect **WSCONS_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags);
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static SDL_Surface *WSCONS_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags);
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static int WSCONS_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors);
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static void WSCONS_VideoQuit(_THIS);
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/* Hardware surface functions */
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static int WSCONS_AllocHWSurface(_THIS, SDL_Surface *surface);
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static int WSCONS_LockHWSurface(_THIS, SDL_Surface *surface);
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static void WSCONS_UnlockHWSurface(_THIS, SDL_Surface *surface);
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static void WSCONS_FreeHWSurface(_THIS, SDL_Surface *surface);
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/* etc. */
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static WSCONS_bitBlit WSCONS_blit16;
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static WSCONS_bitBlit WSCONS_blit16blocked;
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static void WSCONS_UpdateRects(_THIS, int numrects, SDL_Rect *rects);
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void WSCONS_ReportError(char *fmt, ...)
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{
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char message[200];
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message[199] = '\0';
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va_list vaArgs;
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va_start(vaArgs, fmt);
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vsnprintf(message, 199, fmt, vaArgs);
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va_end(vaArgs);
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SDL_SetError(message);
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fprintf(stderr, "WSCONS error: %s\n", message);
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}
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/* WSCONS driver bootstrap functions */
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static int WSCONS_Available(void)
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{
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return 1;
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}
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static void WSCONS_DeleteDevice(SDL_VideoDevice *device)
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{
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SDL_free(device->hidden);
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SDL_free(device);
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}
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static SDL_VideoDevice *WSCONS_CreateDevice(int devindex)
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{
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SDL_VideoDevice *device;
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/* Initialize all variables that we clean on shutdown */
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device = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice));
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if (device == NULL) {
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SDL_OutOfMemory();
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return 0;
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}
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SDL_memset(device, 0, (sizeof *device));
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device->hidden =
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(struct SDL_PrivateVideoData *)SDL_malloc((sizeof *device->hidden));
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if (device->hidden == NULL) {
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SDL_OutOfMemory();
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SDL_free(device);
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return(0);
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}
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SDL_memset(device->hidden, 0, (sizeof *device->hidden));
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device->hidden->fd = -1;
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/* Set the function pointers */
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device->VideoInit = WSCONS_VideoInit;
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device->ListModes = WSCONS_ListModes;
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device->SetVideoMode = WSCONS_SetVideoMode;
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device->SetColors = WSCONS_SetColors;
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device->UpdateRects = WSCONS_UpdateRects;
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device->VideoQuit = WSCONS_VideoQuit;
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device->AllocHWSurface = WSCONS_AllocHWSurface;
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device->LockHWSurface = WSCONS_LockHWSurface;
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device->UnlockHWSurface = WSCONS_UnlockHWSurface;
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device->FreeHWSurface = WSCONS_FreeHWSurface;
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device->InitOSKeymap = WSCONS_InitOSKeymap;
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device->PumpEvents = WSCONS_PumpEvents;
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device->free = WSCONS_DeleteDevice;
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return device;
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}
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VideoBootStrap WSCONS_bootstrap = {
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WSCONSVID_DRIVER_NAME,
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"SDL wscons video driver",
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WSCONS_Available,
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WSCONS_CreateDevice
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};
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#define WSCONSDEV_FORMAT "/dev/ttyC%01x"
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int WSCONS_VideoInit(_THIS, SDL_PixelFormat *vformat)
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{
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char devnamebuf[30];
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char *devname;
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char *rotation;
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int wstype;
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int wsmode = WSDISPLAYIO_MODE_DUMBFB;
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size_t len, mapsize;
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int pagemask;
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int width, height;
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devname = SDL_getenv("SDL_WSCONSDEV");
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if (devname == NULL) {
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int activeVT;
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if (ioctl(STDIN_FILENO, VT_GETACTIVE, &activeVT) == -1) {
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WSCONS_ReportError("Unable to determine active terminal: %s",
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strerror(errno));
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return -1;
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}
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SDL_snprintf(devnamebuf, sizeof(devnamebuf), WSCONSDEV_FORMAT, activeVT - 1);
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devname = devnamebuf;
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}
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private->fd = open(devname, O_RDWR | O_NONBLOCK, 0);
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if (private->fd == -1) {
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WSCONS_ReportError("open %s: %s", devname, strerror(errno));
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return -1;
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}
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if (ioctl(private->fd, WSDISPLAYIO_GINFO, &private->info) == -1) {
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WSCONS_ReportError("ioctl WSDISPLAY_GINFO: %s", strerror(errno));
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return -1;
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}
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if (ioctl(private->fd, WSDISPLAYIO_GTYPE, &wstype) == -1) {
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WSCONS_ReportError("ioctl WSDISPLAY_GTYPE: %s", strerror(errno));
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return -1;
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}
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if (ioctl(private->fd, WSDISPLAYIO_LINEBYTES, &private->physlinebytes) == -1) {
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WSCONS_ReportError("ioctl WSDISPLAYIO_LINEBYTES: %s", strerror(errno));
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return -1;
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}
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if (private->info.depth > 8) {
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if (wstype == WSDISPLAY_TYPE_SUN24 ||
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wstype == WSDISPLAY_TYPE_SUNCG12 ||
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wstype == WSDISPLAY_TYPE_SUNCG14 ||
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wstype == WSDISPLAY_TYPE_SUNTCX ||
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wstype == WSDISPLAY_TYPE_SUNFFB) {
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private->redMask = 0x0000ff;
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private->greenMask = 0x00ff00;
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private->blueMask = 0xff0000;
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#ifdef WSDISPLAY_TYPE_PXALCD
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} else if (wstype == WSDISPLAY_TYPE_PXALCD) {
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private->redMask = 0x1f << 11;
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private->greenMask = 0x3f << 5;
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private->blueMask = 0x1f;
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#endif
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} else {
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WSCONS_ReportError("Unknown video hardware");
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return -1;
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}
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} else {
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WSCONS_ReportError("Displays with 8 bpp or less are not supported");
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return -1;
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}
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private->rotate = WSCONS_ROTATE_NONE;
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rotation = SDL_getenv("SDL_VIDEO_WSCONS_ROTATION");
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if (rotation != NULL) {
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if (SDL_strlen(rotation) == 0) {
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private->shadowFB = 0;
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private->rotate = WSCONS_ROTATE_NONE;
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printf("Not rotating, no shadow\n");
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} else if (!SDL_strcmp(rotation, "NONE")) {
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private->shadowFB = 1;
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private->rotate = WSCONS_ROTATE_NONE;
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printf("Not rotating, but still using shadow\n");
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} else if (!SDL_strcmp(rotation, "CW")) {
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private->shadowFB = 1;
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private->rotate = WSCONS_ROTATE_CW;
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printf("Rotating screen clockwise\n");
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} else if (!SDL_strcmp(rotation, "CCW")) {
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private->shadowFB = 1;
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private->rotate = WSCONS_ROTATE_CCW;
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printf("Rotating screen counter clockwise\n");
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} else if (!SDL_strcmp(rotation, "UD")) {
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private->shadowFB = 1;
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private->rotate = WSCONS_ROTATE_UD;
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printf("Rotating screen upside down\n");
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} else {
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WSCONS_ReportError("\"%s\" is not a valid value for "
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"SDL_VIDEO_WSCONS_ROTATION", rotation);
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return -1;
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}
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}
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switch (private->info.depth) {
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case 1:
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case 4:
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case 8:
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len = private->physlinebytes * private->info.height;
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break;
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case 16:
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if (private->physlinebytes == private->info.width) {
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len = private->info.width * private->info.height * sizeof(short);
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} else {
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len = private->physlinebytes * private->info.height;
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}
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if (private->rotate == WSCONS_ROTATE_NONE ||
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private->rotate == WSCONS_ROTATE_UD) {
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private->blitFunc = WSCONS_blit16;
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} else {
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private->blitFunc = WSCONS_blit16blocked;
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}
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break;
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case 32:
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if (private->physlinebytes == private->info.width) {
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len = private->info.width * private->info.height * sizeof(int);
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} else {
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len = private->physlinebytes * private->info.height;
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}
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break;
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default:
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WSCONS_ReportError("unsupported depth %d", private->info.depth);
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return -1;
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}
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if (private->shadowFB && private->blitFunc == NULL) {
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WSCONS_ReportError("Using software buffer, but no blitter function is "
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"available for this %d bpp.", private->info.depth);
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return -1;
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}
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if (ioctl(private->fd, WSDISPLAYIO_SMODE, &wsmode) == -1) {
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WSCONS_ReportError("ioctl SMODE");
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return -1;
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}
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pagemask = getpagesize() - 1;
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mapsize = ((int)len + pagemask) & ~pagemask;
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private->physmem = (Uint8 *)mmap(NULL, mapsize,
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PROT_READ | PROT_WRITE, MAP_SHARED,
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private->fd, (off_t)0);
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if (private->physmem == (Uint8 *)MAP_FAILED) {
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private->physmem = NULL;
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WSCONS_ReportError("mmap: %s", strerror(errno));
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return -1;
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}
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private->fbmem_len = len;
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if (private->rotate == WSCONS_ROTATE_CW ||
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private->rotate == WSCONS_ROTATE_CCW) {
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width = private->info.height;
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height = private->info.width;
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} else {
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width = private->info.width;
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height = private->info.height;
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}
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this->info.current_w = width;
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this->info.current_h = height;
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if (private->shadowFB) {
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private->shadowmem = (Uint8 *)SDL_malloc(len);
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if (private->shadowmem == NULL) {
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WSCONS_ReportError("No memory for shadow");
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return -1;
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}
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private->fbstart = private->shadowmem;
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private->fblinebytes = width * ((private->info.depth + 7) / 8);
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} else {
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private->fbstart = private->physmem;
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private->fblinebytes = private->physlinebytes;
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}
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private->SDL_modelist[0] = (SDL_Rect *)SDL_malloc(sizeof(SDL_Rect));
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private->SDL_modelist[0]->w = width;
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private->SDL_modelist[0]->h = height;
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vformat->BitsPerPixel = private->info.depth;
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vformat->BytesPerPixel = private->info.depth / 8;
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if (WSCONS_InitKeyboard(this) == -1) {
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return -1;
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}
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return 0;
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}
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SDL_Rect **WSCONS_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
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{
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if (format->BitsPerPixel == private->info.depth) {
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return private->SDL_modelist;
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} else {
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return NULL;
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}
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}
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SDL_Surface *WSCONS_SetVideoMode(_THIS, SDL_Surface *current,
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int width, int height, int bpp, Uint32 flags)
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{
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if (width != private->SDL_modelist[0]->w ||
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height != private->SDL_modelist[0]->h) {
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WSCONS_ReportError("Requested video mode %dx%d not supported.",
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width, height);
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return NULL;
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}
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if (bpp != private->info.depth) {
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WSCONS_ReportError("Requested video depth %d bpp not supported.", bpp);
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return NULL;
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}
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if (!SDL_ReallocFormat(current,
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bpp,
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private->redMask,
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private->greenMask,
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private->blueMask,
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0)) {
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WSCONS_ReportError("Couldn't allocate new pixel format");
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return NULL;
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}
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current->flags &= SDL_FULLSCREEN;
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if (private->shadowFB) {
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current->flags |= SDL_SWSURFACE;
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} else {
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current->flags |= SDL_HWSURFACE;
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}
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current->w = width;
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current->h = height;
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current->pitch = private->fblinebytes;
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current->pixels = private->fbstart;
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SDL_memset(private->fbstart, 0, private->fbmem_len);
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return current;
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}
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static int WSCONS_AllocHWSurface(_THIS, SDL_Surface *surface)
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{
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return -1;
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}
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static void WSCONS_FreeHWSurface(_THIS, SDL_Surface *surface)
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{
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}
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static int WSCONS_LockHWSurface(_THIS, SDL_Surface *surface)
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{
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return 0;
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}
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static void WSCONS_UnlockHWSurface(_THIS, SDL_Surface *surface)
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{
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}
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static void WSCONS_blit16(Uint8 *byte_src_pos,
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int srcRightDelta,
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int srcDownDelta,
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Uint8 *byte_dst_pos,
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int dst_linebytes,
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int width,
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int height)
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{
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int w;
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Uint16 *src_pos = (Uint16 *)byte_src_pos;
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Uint16 *dst_pos = (Uint16 *)byte_dst_pos;
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while (height) {
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Uint16 *src = src_pos;
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Uint16 *dst = dst_pos;
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for (w = width; w != 0; w--) {
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*dst = *src;
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src += srcRightDelta;
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dst++;
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}
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dst_pos = (Uint16 *)((Uint8 *)dst_pos + dst_linebytes);
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src_pos += srcDownDelta;
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height--;
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}
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}
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#define BLOCKSIZE_W 32
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#define BLOCKSIZE_H 32
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static void WSCONS_blit16blocked(Uint8 *byte_src_pos,
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int srcRightDelta,
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int srcDownDelta,
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Uint8 *byte_dst_pos,
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int dst_linebytes,
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int width,
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int height)
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{
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int w;
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Uint16 *src_pos = (Uint16 *)byte_src_pos;
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Uint16 *dst_pos = (Uint16 *)byte_dst_pos;
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while (height > 0) {
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Uint16 *src = src_pos;
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Uint16 *dst = dst_pos;
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for (w = width; w > 0; w -= BLOCKSIZE_W) {
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WSCONS_blit16((Uint8 *)src,
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srcRightDelta,
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srcDownDelta,
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(Uint8 *)dst,
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dst_linebytes,
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min(w, BLOCKSIZE_W),
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min(height, BLOCKSIZE_H));
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src += srcRightDelta * BLOCKSIZE_W;
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dst += BLOCKSIZE_W;
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}
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dst_pos = (Uint16 *)((Uint8 *)dst_pos + dst_linebytes * BLOCKSIZE_H);
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src_pos += srcDownDelta * BLOCKSIZE_H;
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height -= BLOCKSIZE_H;
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}
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}
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static void WSCONS_UpdateRects(_THIS, int numrects, SDL_Rect *rects)
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{
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int width = private->SDL_modelist[0]->w;
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int height = private->SDL_modelist[0]->h;
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int bytesPerPixel = (private->info.depth + 7) / 8;
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int i;
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if (!private->shadowFB) {
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return;
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}
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if (private->info.depth != 16) {
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WSCONS_ReportError("Shadow copy only implemented for 16 bpp");
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return;
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}
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for (i = 0; i < numrects; i++) {
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int x1, y1, x2, y2;
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int scr_x1, scr_y1, scr_x2, scr_y2;
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int sha_x1, sha_y1;
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int shadowRightDelta; /* Address change when moving right in dest */
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int shadowDownDelta; /* Address change when moving down in dest */
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Uint8 *src_start;
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Uint8 *dst_start;
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x1 = rects[i].x;
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y1 = rects[i].y;
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x2 = x1 + rects[i].w;
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y2 = y1 + rects[i].h;
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if (x1 < 0) {
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x1 = 0;
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} else if (x1 > width) {
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x1 = width;
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}
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if (x2 < 0) {
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x2 = 0;
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} else if (x2 > width) {
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x2 = width;
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}
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if (y1 < 0) {
|
|
y1 = 0;
|
|
} else if (y1 > height) {
|
|
y1 = height;
|
|
}
|
|
if (y2 < 0) {
|
|
y2 = 0;
|
|
} else if (y2 > height) {
|
|
y2 = height;
|
|
}
|
|
if (x2 <= x1 || y2 <= y1) {
|
|
continue;
|
|
}
|
|
|
|
switch (private->rotate) {
|
|
case WSCONS_ROTATE_NONE:
|
|
sha_x1 = scr_x1 = x1;
|
|
sha_y1 = scr_y1 = y1;
|
|
scr_x2 = x2;
|
|
scr_y2 = y2;
|
|
shadowRightDelta = 1;
|
|
shadowDownDelta = width;
|
|
break;
|
|
case WSCONS_ROTATE_CCW:
|
|
scr_x1 = y1;
|
|
scr_y1 = width - x2;
|
|
scr_x2 = y2;
|
|
scr_y2 = width - x1;
|
|
sha_x1 = x2 - 1;
|
|
sha_y1 = y1;
|
|
shadowRightDelta = width;
|
|
shadowDownDelta = -1;
|
|
break;
|
|
case WSCONS_ROTATE_UD:
|
|
scr_x1 = width - x2;
|
|
scr_y1 = height - y2;
|
|
scr_x2 = width - x1;
|
|
scr_y2 = height - y1;
|
|
sha_x1 = x2 - 1;
|
|
sha_y1 = y2 - 1;
|
|
shadowRightDelta = -1;
|
|
shadowDownDelta = -width;
|
|
break;
|
|
case WSCONS_ROTATE_CW:
|
|
scr_x1 = height - y2;
|
|
scr_y1 = x1;
|
|
scr_x2 = height - y1;
|
|
scr_y2 = x2;
|
|
sha_x1 = x1;
|
|
sha_y1 = y2 - 1;
|
|
shadowRightDelta = -width;
|
|
shadowDownDelta = 1;
|
|
break;
|
|
default:
|
|
WSCONS_ReportError("Unknown rotation");
|
|
return;
|
|
}
|
|
|
|
src_start = private->shadowmem + (sha_y1 * width + sha_x1) * bytesPerPixel;
|
|
dst_start = private->physmem + scr_y1 * private->physlinebytes +
|
|
scr_x1 * bytesPerPixel;
|
|
|
|
private->blitFunc(src_start,
|
|
shadowRightDelta,
|
|
shadowDownDelta,
|
|
dst_start,
|
|
private->physlinebytes,
|
|
scr_x2 - scr_x1,
|
|
scr_y2 - scr_y1);
|
|
}
|
|
}
|
|
|
|
int WSCONS_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Note: If we are terminated, this could be called in the middle of
|
|
* another SDL video routine -- notably UpdateRects.
|
|
*/
|
|
void WSCONS_VideoQuit(_THIS)
|
|
{
|
|
int mode = WSDISPLAYIO_MODE_EMUL;
|
|
|
|
if (private->shadowmem != NULL) {
|
|
SDL_free(private->shadowmem);
|
|
private->shadowmem = NULL;
|
|
}
|
|
private->fbstart = NULL;
|
|
if (this->screen != NULL) {
|
|
this->screen->pixels = NULL;
|
|
}
|
|
|
|
if (private->SDL_modelist[0] != NULL) {
|
|
SDL_free(private->SDL_modelist[0]);
|
|
private->SDL_modelist[0] = NULL;
|
|
}
|
|
|
|
if (ioctl(private->fd, WSDISPLAYIO_SMODE, &mode) == -1) {
|
|
WSCONS_ReportError("ioctl SMODE");
|
|
}
|
|
|
|
WSCONS_ReleaseKeyboard(this);
|
|
|
|
if (private->fd != -1) {
|
|
close(private->fd);
|
|
private->fd = -1;
|
|
}
|
|
}
|